To see God a Person have to become spiritual by the Holy Spirit.
John 4:24.
John 3:5-6-7 a person must be born of God to see God,
Jesus Christ said my Kingdom is not of this world. John 18:36.
everything you see came from the spirit world. Hebrews 11:3 so if you want to see things in the invisible world. you have to become a spirit like an angel.
1 Thessalonians 5:23 we are body soul and spirit. we have to function as a 3 part person to understand. sins, strongholds, generational curses, and Redemption because it is 75% more of a spiritual matter, when you grow in the spirit-man you will see demons, evil spirits, fallen angels, and human spirits.
This Drawing is all a Spiritual revelation that took me 25 years to get understanding.
Note: not everywhere in the spirit world is the kingdom of God. the kingdom of God is in the new creation revelation chapter 21 and 22 far towards the right at X3 this place have a spiritual city that is 2 billion years old.